Sökning: "forced oscillation"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden forced oscillation.

  1. 1. Towards Improved Diagnostics and Monitoring in Childhood Asthma : Methodological and Clinical Aspects of Exhaled NO and Forced Oscillation Technique

    Författare :Charlotte Heijkenskjöld Rentzhog; Malinovschi Andrei; Lennart Nordvall; Kjell Alving; Lauri Lehtimäki; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; asthma; children; exhaled NO; forced oscillation technique; airway inflammation; small airways; asthma diagnostics; Pediatrik; Pediatrics; Lungmedicin; Lung Medicine;

    Sammanfattning : Background: Asthma is a heterogeneous disease. Diagnosis relies on symptom evaluation and lung function tests using spirometry. Symptoms can be vague. Spirometry is effort-dependent and does not reliably evaluate small airways. LÄS MER

  3. 2. On the forced oscillation lung function test and its design for use in children

    Författare :Per-Håkan Aronsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; forced oscilliation; respiratory mechanics; averaging; lung function test; least squares method; respiratory resistance; upper airway shunting; respiratory reactance; frequency dependence of resistance;

    Sammanfattning : .... LÄS MER

  4. 3. A Large Eddy Simulation Based Fluid-Structure Interaction Methodology with Application in Hydroelasticity

    Författare :Andreas Feymark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydroelasticity; subgrid modeling; large eddy simulation; trip model; fluid- structure interaction; numerical simulation; forced oscillation; naval architecture; hydrodynamics;

    Sammanfattning : The phenomenon of hydroelasticity is a subarea of Fluid-Structure Interaction (FSI) and of major importance in many engineering applications related to hydrodynamics and naval architecture e.g. LÄS MER

  5. 4. Large Eddy Simulation of an Oscillating Cylinder

    Författare :Andreas Feymark; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; numerical simulation; hydrodynamics; LES; subgrid modeling; forced oscillation;

    Sammanfattning : In this thesis Large Eddy Simulation of an Oscillating Cylinder is carried out studying the governing flow physics and modeling aspects such as effect of grid resolution and subgrid model. This also involves validation of the predictions with experimental data in terms of Fourier analysis, magnitude and characteristic shape of drag and lift force profiles. LÄS MER

  7. 5. Airway mechanics of mice and men

    Författare :Lennart Lundblad; Malmö Klinisk fysiologi och nuklearmedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Fysiologi; radiologi; tomografi; tomography; medical instrumentation; Clinical physics; Medicin människa och djur ; Medicine human and vertebrates ; Penh; emphysema; airway resistance; gas conditioning; plethysmography; lung mechanics; Boyle s law; Physiology; medicinsk instrumentering; Klinisk fysiologi; radiology; enhanced pause; pulmonary fibrosis; micro computed tomography; forced oscillation technique; COPD;

    Sammanfattning : In this thesis we explore and further develop several techniques used in the animal laboratory as well as in the clinical setting. In particular, we expand the understanding and usefulness of plethysmographic techniques in small rodents. LÄS MER